Mechanic of Advanced and Smart Materials
Quarterly

Investigating the effect of nanocellulose and nanoparticles of rosemary extract on elastic and antibacterial properties of epoxy-based biocomposite

Document Type : Original Article

Authors

Mahdi Karami Khorramabadi 1
Fatemeh Hadipour 2
Behrooz Dousti 2

1 Department of Mechanical engineering, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran

2 Department of Microbiology, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran

https://doi.org/10.61186/masm.3.4.491
Abstract
This research examines the elastic property as one of the mechanical properties and antibacterial properties of cellulose nanoparticles and rosemary plant extract and their effect on the overall performance of epoxy biocomposites based on cellulose nanoparticle and rosemary extract. In this article, rosemary plant is used to determine the antimicrobial activity. At first, the samples were made for uniform distribution with four weight percents (pure, 0.5%, 1%, 1.5%, 2%) of rosemary extract, nano cellulose and the combination of extract and nano cellulose.Then the samples were subjected to tensile test and the results indicate that the Young's modulus started to increase from 0.5% by weight and the highest Young's modulus is obtained at 1.5% by weight of the reinforcements. Also, the mechanical properties of the samples started to decrease at 2% by weight, which can be due to the clumping or agglomeration of non-reinforcers in the epoxy, which reduces its mechanical properties. In the antibacterial test, based on the results, Escherichia coli bacteria did not show sensitivity to rosemary extract and no lack of growth was observed. This is while Staphylococcus aureus bacteria showed sensitivity to rosemary extract and recorded a 20 mm diameter halo. Finally, Staphylococcus bacteria is sensitive to the manufactured biocomposites and the best antibacterial performance was observed in the hybrid biocomposite at 2% by weight.

Keywords

Epoxy
nano cellulose
rosemary
mechanical properties
antibacterial properties
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Mechanic of Advanced and Smart Materials
Volume 3, Issue 4
Winter 2024
Pages 491-515

  • Receive Date 11 December 2023
  • Revise Date 03 February 2024
  • Accept Date 07 March 2024

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